- Which is the most abundant gas in the earth's atmosphere ?
- Nitrogen
- Carbon
- Oxygen
- Chlorine
- % of nitrogen in atmosphere ?
- 79.65%
- 78.02%
- 78.08%
- 77.98%
- Which gas evolved from paddy fields and marshes ?
- Ethane
- Methane
- Oxygen
- Carbondioxide
- Which toxic element present in automobile exhausts ?
- Tin
- Iron
- Cupper
- Lead
- Which metal is used in the making of microchips ?
- Silicon
- Tin
- Lead
- Platinum
- What is sodium carbonate commonly known as ?
- Baking soda
- Sodium bicarbonate
- Soda ash
- Washing soda or soda ash
- Which gas evolved from paddy fields and marshes?
- Ethane
- Methane
- Oxygen
- Carbondioxide
Question based on science.
- Vytvořeno 12/10/2019
- Publikováno 12/10/2019
- Znění pozdějších předpisů 12/10/2019
- Obtížnost Snadný
- Dotazy 7
- Téma Vědecký
Máte na výběr ze 3 typů provedení:
- Oranžová
- Modrá
- Light
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